Open School Admin (OSA) is a Web-based school administration system primarily focused on ease of use and access to school information. It has been in continuous use and development for the past 7 years.
It manages all aspects of school administration: student enrollment, class scheduling, mark reporting, attendance, user accounts, and room booking. Through the use of various plugins, it also manages email announcements (including automated attendance notices), government reporting, dorm room management, Alumni relations, etc. It is a standalone application written using a Perl/MySQL back end. It requires a Web server (Apache/Lighttpd tested) and should run out of the box on any Unix system.
While OSA itself is very mature, the installation and setup is still a young and evolving process.

Web Note Pad is a Web-based notepad script. It features a two paned interface that allows you to manage your documents, create new files, search text content, or select a file to load into the editor. Previous versions of documents are kept, and 30 days of history can be examined using the "Older" or "Newer" navigation buttons on the toolbar.

wwwhisper is a privacy-friendly system which simplifies sharing Web resources which are not intended for everyone. It allows you to specify which HTTP resources can be accessed by owners of which email addresses. Mozilla Persona is used to prove that a visitor owns an allowed email address. No site-specific password is needed. The Persona UI makes the authentication process really smooth. wwwhisper is application-independent and can be used for any Web resources.

Card Stories provides a server for a networked guessing game using picture cards. One player (the "author") starts the game by choosing a card, picking a word or a sentence to describe it, and sending out invitations to others to participate. Each of these players receives seven cards and has to pick one that best matches the author's description. Once enough players have chosen a card, the author displays all chosen cards and the players try to figure out which one is the author's. If at least one but not all of them guesses correctly, the author wins, along with the players who guessed correctly. Otherwise, the guessers all win.

Cubes is a Python framework for online analytical processing (OLAP), multidimensional analysis, star and snowflake schema denormalization, and cube comptutation. It features a logical model that describes how data are being analyzed and reported, independent of physical data implementation, hierarchical dimensions (attributes that have hierarchical dependencies, such as category-subcategory or country-region), localizable metadata and data localization.

OCEMR is a Web based electronic medical records (EMR) system designed for the clinic environment. It is currently in use in the Engeye Health Clinic located in Ddegeya, Uganda (near Masaka, UG). It was designed for small clinics in rural parts of the world, so it is is light and fast.

Salut à Toi (or SàT: "Hi to You") is an XMPP/Jabber client with multi-frontends. You can use it on a desktop (Wix), with a console interface (Primitivus), as a command-line tool (jp), or on the Web (Libervia). A plugin architecture is used to make it modular. With SàT, you can perform all the expected XMPP functions (instant messaging, multi-user chat, file transfert, etc.), but you can also use your email client (MUA) to read and send your XMPP messages, play games, do microblogging, pipe Unix command results, make scripts, etc.